JP2020047881A - Unnecessary sheet removing device and unnecessary sheet removing method - Google Patents

Abstract

To provide an unnecessary sheet removing device and an unnecessary sheet removing method that can prevent unnecessary sheet collection failure as much as possible.SOLUTION: An unnecessary sheet removing device EA includes feeding means 10 that feeds a raw sheet RS in which a plurality of adhesive sheets AS and a strip-shaped unnecessary sheet US are temporarily attached to a strip-shaped release sheet RL, collection means 20 that separates the unnecessary sheet US from the release sheet RL and performs a predetermined collection operation to collect the unnecessary sheet US, and unnecessary sheet feeding means 30 that feeds the unnecessary sheet US in the collection means 20 direction between a peeling start part PT1 where the unnecessary sheet US is peeled from the release sheet RL and a collection start part PT2 where the unnecessary sheet US is collected by the collection means 20 in synchronization with a collection operation of the collection means 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an unnecessary sheet removing apparatus and an unnecessary sheet removing method.

  2. Description of the Related Art Conventionally, there has been known an apparatus that peels and collects an unnecessary sheet from a raw material in which a plurality of adhesive sheets and a strip-shaped unnecessary sheet are temporarily attached to a strip-shaped release sheet (for example, see Patent Document 1).

JP 2008-55661 A

  However, in the continuous label manufacturing apparatus 11 (unnecessary sheet removing apparatus) described in Patent Literature 1, the label waste 21A (unnecessary sheet) peeled from the label continuous body 12 (raw material) is removed by the waste take-up roller 18 (recovery means). Since the sheet is collected while being pulled, the unsupported unnecessary sheet portion located between the separation start portion where the unnecessary sheet is separated from the release paper 23 (release sheet) and the collection start portion where the unnecessary sheet is collected by the collection unit is collected. There is an inconvenience that the sheet is cut by the tension of the unit, and a collection failure of the unnecessary sheet occurs. Such inconvenience becomes remarkable when the unnecessary sheet is soft or fragile, or when the width is small.

  An object of the present invention is to provide an unnecessary sheet removing apparatus and an unnecessary sheet removing method that can minimize the collection failure of unnecessary sheets.

  The present invention has adopted the configuration described in the claims.

According to the present invention, since the unnecessary sheet is sent in the direction of the collecting means in synchronization with the collecting operation of the collecting means, the unsupported unnecessary sheet portion located between the peeling start portion and the collecting start portion is cut by the tension of the collecting means. Is prevented as much as possible, and defective collection of unnecessary sheets can be prevented as much as possible.
In addition, if the unnecessary sheets are sent in the direction of the collecting means by a plurality of roller members that sandwich and bend the unnecessary sheets and a belt member that is wrapped around a pulley, the area in contact with the unsupported unnecessary sheet portion is increased. In addition, the unsupported unnecessary sheet portion can be sent toward the collection unit.

FIG. 1 is an explanatory diagram of an unnecessary sheet removing device according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In this embodiment, the X axis, the Y axis, and the Z axis are orthogonal to each other. The X axis and the Y axis are axes within a predetermined plane, and the Z axis is an axis orthogonal to the predetermined plane. I do. Furthermore, in the present embodiment, based on the case of viewing from the near side of FIG. 1 parallel to the Y axis, when the direction is indicated, “up” is the arrow direction of the Z axis, “down” is the opposite direction, The left is the direction of the arrow on the X axis, the right is the opposite direction, the front is the front direction in FIG. 1 parallel to the Y axis, and the rear is the opposite direction.

  In FIG. 1, an unnecessary sheet removing device EA includes a feeding unit 10 that feeds out a raw sheet RS in which a plurality of adhesive sheets AS and a strip-shaped unnecessary sheet US are temporarily attached to a strip-shaped release sheet RL, and an unnecessary sheet from the release sheet RL. The collecting unit 20 that separates the US and performs a predetermined collecting operation to collect the unnecessary sheet US, the separation start part PT1 where the unnecessary sheet US is separated from the separation sheet RL, and the collecting unit 20 collects the unnecessary sheet US An unnecessary sheet feeding means 30 for sending an unnecessary sheet US toward the collection means 20 in synchronization with the collection operation of the collection means 20 between the collection start part PT2 and the semiconductor wafer (hereinafter, referred to as an adherend). A sheet sticking apparatus EA1 is formed by a pressing means 40 for pressing and bonding the adhesive sheet AS to the WF and a supporting means 50 for supporting the wafer WF. To have.

The feeding means 10 includes a support roller 11 that supports an adhesive sheet laminate RS1 in which a strip-shaped adhesive sheet base material BS is temporarily attached to the release sheet RL and a cover sheet CS is temporarily attached on the adhesive sheet base material BS. A predetermined tension is always applied to the first to fourth guide rollers 12A to 12D that guide the adhesive sheet laminate RS1 and the like, and the cover sheet CS that is wrapped around the second guide roller 12B and separated from the adhesive sheet base material BS. A cover sheet collecting roller 13 that applies and winds and collects the cover sheet CS, an adhesive sheet AS that forms a closed loop cut CU in the adhesive sheet base material BS, and is located inside the cut CU. A cutting unit 14 for forming an unnecessary sheet US located outside the cut CU and a repetitive output applying unit 15 for applying repetitive output to the raw RS are provided to feed the raw RS. It has become.
The cutting means 14 is supported by an output shaft 14B of a rotary motor 14A as a driving device, and is provided with a die-cut roller 14D provided with a cutting blade 14C as a flat loop-shaped cutting member on a circumferential surface, and is synchronized with the die-cut roller 14D. And a rotating anvil roller 14E.
The repetitive output applying means 15 includes a support plate 15C supported by a slider 15B of a linear motor 15A as a drive device, a rotation motor 15D as a drive device supported by the support plate 15C, and a rotation motor 15D (not shown). A predetermined tension is always applied to the release sheet RL between the drive roller 15F, which is supported by the output shaft and sandwiches the release sheet RL with the pinch roller 15E, and the pinch roller 15E, and the release sheet RL is wound. And a release sheet collecting roller 15G for collecting the sheet.

The collection unit 20 is driven by an unnecessary sheet collection roller 21 that winds and collects the unnecessary sheet US that is wound around the fourth guide roller 12D and separated from the separation sheet RL, and a rotation motor 22 as a driving device. A drive roller 23; and urging means 24 for urging the unnecessary sheet collection roller 21 in the direction of the drive roller 23 with the unnecessary sheet US interposed therebetween, and winding the unnecessary sheet US around the unnecessary sheet collection roller 21. I have.
The urging means 24 is rotatably supported by a fulcrum shaft 24A, and rotatably supports the unnecessary sheet collection roller 21 on the opposite side of the fulcrum shaft 24A. And a spring 24C for urging the spring 24C.

  The unnecessary sheet feeding unit 30 includes a plurality of roller members 31 that sandwiches the unnecessary sheet US to bend the unnecessary sheet US, and a rotating force applying unit that applies a rotating force to the plurality of roller members 31. A dynamic motor 32 is provided to support the unsupported unnecessary sheet portion US1 located between the peeling start portion PT1 and the collection start portion PT2 and send the unnecessary sheet US toward the collection means 20. Each of the roller members 31 is configured to be rotationally driven by a rotation motor 32 via pulleys (not shown) attached to the respective pulleys, and a belt 33 as a driving force transmitting means wound around the respective pulleys. ing.

  The pressing means 40 is shared with the feeding means 10 and includes a linear motor 15A, a slider 15B, a support plate 15C, a rotating motor 15D, a pinch roller 15E, a driving roller 15F, and a release sheet collecting roller 15G.

  The supporting means 50 is supported by a linear motor 51 as a driving device and an output shaft 51A of the linear motor 51, and is provided with a holding surface capable of being suction-held by a pressure reducing means (holding means) (not shown) such as a pressure reducing pump or a vacuum ejector. And a table 52 having 52A.

The operation of the sheet sticking device EA1 including the above unnecessary sheet removing device EA will be described.
First, the user of the sheet sticking apparatus EA1 (hereinafter, simply referred to as “user”) attaches the adhesive sheet laminate RS1 to the sheet sticking apparatus EA1 in which each member is arranged at an initial position indicated by a solid line in FIG. It is set as shown in the figure, and a signal for starting automatic operation is inputted through operation means (not shown) such as an operation panel and a personal computer. Then, the feeding means 10, the collecting means 20, and the unnecessary sheet feeding means 30 drive the rotation motors 14A, 15D, 22, 32, and while feeding out the adhesive sheet laminate RS1, rotate the die cut roller 14D to rotate the adhesive sheet base material. By forming the cut CU having a closed loop shape in the BS, a material RS on which the adhesive sheet AS and the unnecessary sheet US are temporarily attached is formed on the release sheet RL, and the material RS is fed.

Next, as shown in FIG. 1, the arrival of the leading end of the first adhesive sheet AS temporarily attached to the release sheet RL in the feeding direction reaches a predetermined position below the third guide roller 12 </ b> C. When a sheet leading end detecting device (not shown) including various sensors such as an optical sensor and an ultrasonic sensor detects the feeding, the feeding unit 10, the collecting unit 20, and the unnecessary sheet feeding unit 30 rotate the rotary motors 14A, 15D, 22, 32. Stop driving.
When the raw sheet RS is fed out as described above, the cover sheet CS is separated from the adhesive sheet base material BS by the second guide roller 12B, wound around the cover sheet collecting roller 13, and collected. The unnecessary sheet US is separated from the separation sheet RL by the fourth guide roller 12D, wound around the unnecessary sheet collection roller 21, and collected.
Here, the unnecessary sheet US peeled from the release sheet RL is sent toward the collection unit 20 by the roller member 31 that is driven to rotate in synchronization with the collection operation of the collection unit 20, that is, the rotation operation of the unnecessary sheet collection roller 21. , And is wound up by the unnecessary sheet collecting roller 21.

  Thereafter, when a user or a transfer means (not shown) such as a belt conveyor or an articulated robot places the wafer WF on the holding surface 52A as shown in FIG. 1, the support means 50 drives the pressure reducing means (not shown). Then, the suction holding of the wafer WF on the holding surface 52A is started. Next, the linear motor 15A is driven in a state where the feeding means 10 locks the driving of the rotation motor 15D, and the support plate 15C is moved rightward as shown by a two-dot chain line in FIG. Roll out. Also at this time, the feeding means 10, the collecting means 20, and the unnecessary sheet feeding means 30 drive the rotating motors 14A, 22, 32, collect the cover sheet CS with the cover sheet collecting roller 13, and cut the adhesive sheet base material BS. An unnecessary sheet US sent by the roller member 31 is collected by the unnecessary sheet collecting roller 21 while forming the sheet CU to form the raw sheet RS. When the sheet leading end detecting device (not shown) detects that the leading end of the next adhesive sheet AS following the leading adhesive sheet AS has reached a predetermined position below the third guide roller 12C, the feeding means 10, the collecting means. The means 20 and the unnecessary sheet feeding means 30 stop driving the linear motor 15A and the rotation motors 14A, 22, 32.

  Next, the support means 50 drives the linear motion motor 51 and raises the table 52 as shown by a two-dot chain line in FIG. 1, and then the pressing means 40 drives the linear motor 15A and the rotary motor 15D, The support plate 15C is moved to the left while rolling the roller 15F to press the material RS against the wafer WF. Thereby, the adhesive sheet AS is stuck on the upper surface of the wafer WF, the release sheet RL is peeled off from the adhesive sheet AS, and the peeled release sheet RL is collected by the release sheet collecting roller 15G. Thereafter, when the release sheet RL is completely released from the adhesive sheet AS and the support plate 15C returns to the initial position, the pressing means 40 stops driving the linear motor 15A and the rotation motor 15D.

  Next, after the supporting means 50 drives the linear motor 51 to return the table 52 to the initial position, the driving of the pressure reducing means (not shown) is stopped, and the suction holding of the wafer WF on the holding surface 52A is released. Then, the user or a transfer unit (not shown) transfers the wafer WF on the holding surface 52A to the next step, and thereafter, the same operation as described above is repeated.

  According to the above-described embodiment, the unnecessary sheet US is sent in the direction of the collection unit 20 in synchronization with the collection operation of the collection unit 20, so that there is no need for support provided between the separation start part PT1 and the collection start part PT2. Cutting of the sheet portion US1 by the tension of the collection unit 20 is suppressed as much as possible, and collection failure of the unnecessary sheet US can be prevented as much as possible.

  As described above, the best configuration and method for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, although the present invention has been particularly shown and described with particular reference to particular embodiments, without departing from the spirit and scope of the invention, the shape, Those skilled in the art can make various modifications in materials, quantities, and other detailed configurations. In addition, the description in which the shapes, materials, and the like disclosed above are limited is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The description by the name of the member excluding some or all of the limitations such as is included in the present invention.

For example, the feeding means 10 supports, with the support roller 11, the raw sheet RS on which the adhesive sheet AS and the unnecessary sheet US are temporarily attached to the release sheet RL by forming the cut CU in the adhesive sheet base material BS in advance. The source RS may be fed out. In this case, the feeding means 10 may or may not be provided with the cutting means 14.
The feeding unit 10 moves the support roller 11, the first to fourth guide rollers 12A to 12D, the cover sheet collecting roller 13, the cutting unit 14, and the like without moving the support plate 15C or while moving the raw plate RS. May be fed out, may be fed out while holding the raw material RS by holding means such as a chuck cylinder or a suction pad, or may be an adhesive sheet laminate RS1 or a raw material that is supported without being wound, for example, by fanfold folding. The anti-RS may be fed out, or the cover sheet CS or the release sheet RL may be collected without being wound, for example, by fanfold folding, shredded with a shredder or the like, or may be recovered by the cover sheet CS or the release sheet RL. May be simply collected and collected without winding or fanfold folding.
The cutting means 14 may move the cutting member without moving the adhesive sheet laminate RS1 or while moving the adhesive sheet laminate RS1, form the cut CU in the adhesive sheet base material BS to form the raw material RS, or Before peeling the cover sheet CS from the sheet base material BS, the cover sheet CS may be penetrated, the cut sheet CU may be formed in the adhesive sheet base material BS to form the raw material RS, or as a cutting member, A so-called flat blade that forms a cut CU of a predetermined shape in the adhesive sheet base material BS by separating from and approaching the adhesive sheet base material BS may be employed, or the cutting blade 14C may be moved relative to the die cut roller 14D. It may be removable or non-removable.

The collecting means 20 may collect the unnecessary sheet US peeled from the peeling sheet RL without being wrapped around the fourth guide roller 12D. For example, the collecting means 20 may be folded in a fan fold or cut with a shredder or the like. The unnecessary sheet US may be collected. In these cases, the unnecessary sheet feeding unit 30 collects the unnecessary sheet US in synchronization with the collection operation of the collection unit 20 that folds the fan fold or cuts it with a shredder or the like. What is necessary is just to comprise so that the operation | movement which sends to 20 directions may be performed.
The collection unit 20 may drive the unnecessary sheet collection roller 21 with a rotation motor as a driving device. In this case, the rotation motor 22, the driving roller 23, and the urging unit 24 may be omitted.
The urging means 24 may urge the unnecessary sheet collection roller 21 in the direction of the driving roller 23 by a linear motor as a driving device or a linear motor as a driving device. The unnecessary sheet collecting roller 21 may be urged toward the drive roller 23 by its own weight.

The unnecessary sheet feeding means 30 may include a driving device for moving the roller member 31 away from and approaching the unnecessary sheet US, or may contact only the surface of the unnecessary sheet US temporarily attached to the release sheet RL, and The unnecessary sheet US may be sent in the direction of the collecting unit 20 in synchronization with the collecting operation of the collecting unit 20, or only the surface of the unnecessary sheet US that has not been temporarily attached to the release sheet RL may be contacted and synchronized with the collecting operation of the collecting unit 20. Then, the unnecessary sheet US may be sent in the direction of the collection unit 20.
The unnecessary sheet feeding means 30 includes, for example, a first pulley 34 driven by a rotating motor 34A as a driving device and a second pulley 35 which can rotate freely, as shown in the figure of AA shown at the upper left in FIG. And a belt member 36 wrapped around the first pulley 34 and the second pulley 35. In this case, similarly to the above-described embodiment, the unnecessary sheet US may be sandwiched by the belt member 36 and the unnecessary sheet US may be sent to the collection unit 20 or may be temporarily attached to the release sheet RL of the unnecessary sheet US. The unnecessary sheet US may be sent in the direction of the collection unit 20 in synchronization with the collection operation of the collection unit 20 by contacting only the surface that has not been processed, or as indicated by a two-dot chain line in FIG. As described above, the belt member 36 is formed of a porous member, and a suction chamber 37 having a suction surface 37A that can be suctioned by a pressure reducing means (not shown) such as a pressure reducing pump or a vacuum ejector is used. The unnecessary sheet US may be sent toward the collection means 20 while being suction-held, or the unnecessary sheet feeding means 30 shown in the above-described embodiment and the unnecessary sheet feeding means 30 in FIG. It may be used in combination with unnecessary sheet feeding means 30 shown in figure No. AA.
The roller member 31 may have the same length as the width of the unnecessary sheet US, or may be longer or shorter than the width of the unnecessary sheet US.
The rotating force applying means may employ a rotating motor as a driving device for individually rotating and driving all the roller members 31. In the embodiment of the embodiment, the rotating force applying means temporarily attaches to the release sheet RL of the unnecessary sheet US. The rotational force may be applied only to the roller member 31 that comes into contact with the surface side that has been contacted, or the rotational force may be applied only to the roller member 31 that comes into contact with the surface side of the unnecessary sheet US that has not been temporarily attached to the release sheet RL. May be.
The driving force transmitting means may be constituted by a gear, a chain, or the like.

  The pressing means 40 is shared with the feeding means 10 instead of part or all of the linear motor 15A, the slider 15B, the support plate 15C, the rotating motor 15D, the pinch roller 15E, the driving roller 15F, and the release sheet collecting roller 15G. May be employed, or the raw sheet RS may be pressed against the wafer WF from above the release sheet RL with a pressing member supported on the output shaft of a linear motor as a driving device, and the adhesive sheet AS may be used as the wafer WF. Or holding the release sheet RL with a holding member supported by an output shaft of a linear motion motor as a driving device and capable of being suction-held by a decompression means such as a decompression pump or a vacuum ejector. A configuration may be adopted in which the release sheet RL held in the step is separated from the adhesive sheet AS and separated.

  The supporting means 50 may not have the holding means, may make the wafer WF abut on the adhesive sheet AS when the table 52 is raised, may or may not make the wafer WF abut, or may be provided by another device. When supporting the wafer WF, the sheet pasting device EA1 may not be provided.

The unnecessary sheet removing apparatus EA is, for example, a raw sheet RS in which a plurality of adhesive sheets AS are temporarily attached at predetermined intervals to a strip-shaped release sheet RL, in addition to the sheet attaching apparatus EA1, and there is no unnecessary sheet US. The present invention may be applied to any material, such as a material manufacturing apparatus that forms the material RS, a printing machine or a printer that performs predetermined printing or printing on the adhesive sheet AS.
The unnecessary sheet US may be temporarily attached to the surface of the release sheet RL to which the adhesive sheet AS is temporarily attached, or may be temporarily attached to the surface of the release sheet RL to which the adhesive sheet AS is not temporarily attached. When the adhesive sheet AS of the release sheet RL is temporarily attached to the temporarily attached surface, the adhesive sheet AS may be temporarily attached adjacent to the adhesive sheet AS so as not to overlap with the adhesive sheet AS, It may be temporarily attached so as to be away from the adhesive sheet AS so as not to overlap with the AS, or may be temporarily attached so as to overlap with the adhesive sheet AS.

  The material, type, shape, and the like of the adhesive sheet AS, the unnecessary sheet US, and the adherend in the present invention are not particularly limited. For example, the adhesive sheet AS may have a circular shape, an elliptical shape, a polygonal shape such as a triangle or a quadrangle, or other shapes, or may have an adhesive form such as pressure-sensitive adhesiveness or heat-sensitive adhesiveness. When the heat-sensitive adhesive sheet AS is employed, the adhesive sheet AS may be adhered by an appropriate method such as providing an appropriate coil heater for heating the adhesive sheet AS or a heating means such as a heating side such as a heat pipe. In addition, such an adhesive sheet AS is, for example, a single layer having only an adhesive layer, a sheet having a substrate and an adhesive layer, a sheet having an intermediate layer between the substrate and the adhesive layer, and the like. Layer or two or more layers, and further, a so-called double-sided adhesive sheet capable of peeling the substrate from the adhesive layer may be used, and the double-sided adhesive sheet may be a single-layer or multilayer intermediate layer Or a single-layer or multilayer having no intermediate layer. Examples of the adherend include foods, resin containers, semiconductor wafers such as silicon semiconductor wafers and compound semiconductor wafers, circuit substrates, information recording substrates such as optical disks, glass plates, steel plates, pottery, wood plates, resin plates, and the like. It may be a simple substance or a composite formed by two or more of them, and may be a member or an article of any form. In addition, the adhesive sheet AS may be replaced with a functional or application-specific reading method. Any sheet, film, tape, or the like having the shape described above may be used.

The means and steps in the present invention are not limited in any way as long as they can perform the operations, functions or steps described for the means and steps, much less the constituents of only one embodiment shown in the above embodiment and There is no limitation to the process at all. For example, if the feeding means can feed out an original sheet in which a plurality of adhesive sheets and a strip-shaped unnecessary sheet are temporarily attached to a strip-shaped release sheet, the feeding means can be compared with the common general technical knowledge at the time of filing the application. There is no limitation as long as it is within the range (the description of other means and steps is omitted).
Driving devices in the above embodiment include electric motors such as a rotary motor, a linear motion motor, a linear motor, a single-axis robot, a multi-joint robot having two or three or more joints, an air cylinder, a hydraulic cylinder, and a rodless. Actuators, such as cylinders and rotary cylinders, can be employed, and those obtained by directly or indirectly combining them can be employed.
In the embodiment, when a rotating member such as a roller is employed, a driving device for rotating the rotating member may be provided, or the surface of the rotating member or the rotating member itself may be deformable such as rubber or resin. It may be constituted by a member, may be constituted by a member that does not deform the surface of the rotating member or the rotating member itself, or may be a member that presses an object to be pressed such as pressing means such as a pressing roller or a pressing head or a pressing member. When employed, instead of or in combination with those exemplified above, a member such as a roller, a round bar, a blade material, rubber, a resin, a sponge, or the like, or pressed by blowing air or gas such as gas. Or a member to be pressed may be formed of a deformable member such as rubber or resin, or may be formed of a member that does not deform, or a peeling plate or a peeling roller. Peeling means and peeling When a member such as a member that separates an object to be separated is used, a member such as a plate member, a round bar, a roller, or the like may be used instead of or in combination with the above examples, or the member may be separated. The object may be formed of a deformable member such as rubber or resin, or may be formed of a member that does not deform, or supports or holds a supported member such as a supporting (holding) means or a supporting (holding) member. When such a device is used, gripping means such as a mechanical chuck or a chuck cylinder, Coulomb force, adhesive (adhesive sheet, adhesive tape), adhesive (adhesive sheet, adhesive tape), magnetic force, Bernoulli suction, suction suction, A configuration in which a supported member is supported (held) by a driving device or the like may be employed, or a member that cuts a member to be cut such as a cutting unit or a cutting member, or forms a cut or a cutting line in the member to be cut. If employed, Instead of or in combination with those exemplified in the above, a cutter blade, a laser cutter, an ion beam, thermal power, heat, water pressure, a heating wire, or a material that is cut by spraying a gas or liquid, or the like, may be used, or an appropriate material may be used. The cutting device may be combined with a driving device to move and cut, or when a biasing unit is employed, the cutting device may be formed of a spring, rubber, resin, or the like.

EA: unnecessary sheet removing device 10: feeding means 20: collecting means 30: unnecessary sheet feeding means 31: roller member 32: rotating motor (rotational force applying means)
34 ... first pulley 35 ... second pulley 36 ... belt member AS ... adhesive sheet PT1 ... peeling start part PT2 ... recovery starting part RL ... peeling sheet RS ... raw material US ... unnecessary sheet

Claims (4)

A feeding unit that feeds out an original sheet in which a plurality of adhesive sheets and a strip-shaped unnecessary sheet are temporarily attached to a strip-shaped release sheet,
A collection unit that separates the unnecessary sheet from the release sheet and performs a predetermined collection operation to collect the unnecessary sheet.
The unnecessary sheet is collected in synchronization with the collection operation of the collection unit between a separation start unit where the unnecessary sheet is separated from the release sheet and a collection start unit where the unnecessary sheet is collected by the collection unit. An unnecessary sheet feeding means for feeding the sheet in the direction of the means.   The unnecessary sheet feeding unit includes a plurality of roller members that sandwich the unnecessary sheet and curve the unnecessary sheet, and a rotational force applying unit that applies a rotational force to the plurality of roller members. The unnecessary sheet removing device according to claim 1.   The unnecessary sheet feeding means includes a first pulley driven by a driving device, a second freely rotatable pulley, and a belt member wrapped around the first and second pulleys. The unnecessary sheet removing device according to claim 1 or 2, wherein A feeding step in which a plurality of adhesive sheets and a strip-shaped unnecessary sheet are fed out of a web temporarily attached to a strip-shaped release sheet,
A collecting step of separating the unnecessary sheet from the release sheet and performing a predetermined collecting operation with a collecting unit to collect the unnecessary sheet;
The unnecessary sheet is collected in synchronization with the collection operation of the collection unit between a separation start unit where the unnecessary sheet is separated from the release sheet and a collection start unit where the unnecessary sheet is collected by the collection unit. An unnecessary sheet feeding step of feeding the sheet in the direction of the means.

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